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DS4305, DS4305K

Electronically Programmable Voltage Reference

Nonvolatile Sample and Infinite-Hold Adjustable Voltage Reference for Automated Factory Calibration

Product Details

Key Features

Applications/Uses

Parametric specs for Voltage References
VOUT (V) Programmable (within 300mV of Rails)
Temp. Coeff. (ppm/°C) (max) 24
ISUPPLY (µA) (max) 2000
Initial Accuracy (% max) (@ +25°C) 0.03
Calibration Method E2CRef.
VSUPPLY (V) (min) 4
VSUPPLY (V) (max) 5.5
Noise 0.1Hz to 10Hz (µVpp) (typ) 160
Oper. Temp. (°C) -40 to +125
Package/Pins SOT23/5
Budgetary
Price (See Notes)
1.06
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Simplified Block Diagram

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Parameters

Parametric specs for Voltage References
VOUT (V) Programmable (within 300mV of Rails)
Temp. Coeff. (ppm/°C) (max) 24
ISUPPLY (µA) (max) 2000
Initial Accuracy (% max) (@ +25°C) 0.03
Calibration Method E2CRef.
VSUPPLY (V) (min) 4
VSUPPLY (V) (max) 5.5
Noise 0.1Hz to 10Hz (µVpp) (typ) 160
Oper. Temp. (°C) -40 to +125
Package/Pins SOT23/5
Budgetary
Price (See Notes)
1.06

Key Features

  • Precise Electronically Adjustable Voltage Reference
  • Enables Automated Factory Trimming of Devices Needing Voltage Adjustment
  • Can be Adjusted to Within ±1.5mV
  • Wide Adjustable Output Voltage Range Within 300mV of the Supply Rails
  • Low Temperature Coefficient
  • ±1mA of Output-Current Drive
  • NV Memory Stores the Voltage Indefinitely
  • Output Short-Circuit Protection
  • Low Cost
  • Low Power Consumption
  • 4.0V to 5.5V Single-Supply Operation
  • Small 5-Lead SOT23 Package
  • -40°C to +125°C Temperature Operation
  • DS4305K Evaluation Kit is Available

Applications/Uses

  • Bias Adjusting
  • Factory-Calibrated Equipment
  • Offset Nulling
  • Power Amps
  • Power Supply Calibration
  • Pressure Bridges
  • Threshold Setting

Description

The DS4305 is a nonvolatile (NV) electronically programmable voltage reference. The reference voltage is programmed in-circuit during factory calibration/programming. Programming the reference voltage, VOUT, is as simple as applying the desired voltage on VIN and toggling the adjust pin (active-low ADJ) to lock the VOUT voltage level indefinitely, even if the device is power cycled. The DS4305 replaces current cumbersome factory adjustment arrangements with a low-cost solution that can be adjusted using automated techniques. In addition, the DS4305 has the ability to be readjusted after the unit has been fully assembled and tested. This results in a much more flexible manufacturing arrangement, lower inventory costs, and a quicker time-to-market.

Simplified Block Diagram

DS4305, DS4305K: Typical Operating Circuit DS4305, DS4305K: Typical Operating Circuit Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .